There are
2,195 mi
from Downey, CA to Piqua, OH
That's the driving distance. It would take 1 day 15 hours to go from Downey, California to Piqua, Ohio.
The flight distance (direct flight from Downey, CA to Piqua, OH) is 1,905.32 mi.
2,195 mi = 3.22 kms